SN4 ""

No	Pattern	Freq
1	the [noun] [conj] it [is]	2170
2	the [noun sg] [conj] it [is]	1930
3	the [noun] [conj] it is	1581
4	the [noun] [that] it [is]	890
5	the [noun] that it [is]	890
6	the [noun] that it [is]	890
7	the [noun] [subord] it [is]	698
8	the [noun] [conj] it 's	589
9	the [noun] [coord] it [is]	582
10	the [noun] and it [is]	437
11	the [noun] and it [is]	437
12	the fact [conj] it [is]	234
13	the fact [conj] it [is]	233
14	the [noun pl] [conj] it [is]	205
15	the [noun] as it [is]	147
16	the [noun] as it [is]	147
17	the [noun] but it [is]	137
18	the [noun] but it [is]	137
19	the [noun] because it [is]	111
20	the [noun] when it [is]	111
21	the [noun] because it [is]	111
22	the [noun] when it [is]	111
23	the [noun] if it [is]	87
24	the [noun] if it [is]	87
25	the ground [conj] it [is]	61
26	the sense [conj] it [is]	51
27	the sense [conj] it [is]	51
28	the grounds [conj] it [is]	43
29	the [noun] until it [is]	38
30	the extent [conj] it [is]	38